Especially in summer, Ventotene is also linked to several ports of the Lazio
coast - Gaeta, Formia, Terracina, Anzio etc.
Caremar used to be the main ferry operator, now "Laziomar" although on this
small craft it says Line Mazzella - a company who run to and from Terracina.
(Also, the Vetor line runs passenger hydrofoils from Formia)